ArticleScientific reports2025
Modifying effects of PM
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Air Pollution and Brain Tumors in Children. A Systematic Review.Current environmental health reports · 2026Pooled it
- Neighborhood privilege and environmental conditions in urban parks: an analysis across the 24 most populated urban areas in the United States.Environmental research letters : ERL [Web site] · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Extreme heat is a critical public health threat, particularly in low- and middle-income countries. While its direct health impacts are well documented, less is known about how air pollution modifies heat-related risks. We analyzed daily hospital admissions for circulatory and respiratory diseases in Brazil (2008-2018), combined with high-resolution temperature and pollution (PM₂.₅ and O₃) data. Using generalized additive models and random-effects meta-analysis, we found that PM₂.₅ consistently amplified the effect of heat on respiratory admissions, with a 20.1% increase in risk under high PM₂.₅ conditions (95% CI 4.8-35.4%). In contrast, O₃ showed heterogeneous effects, including a national-level protective association at high concentrations (- 7.6%, 95% CI - 9.6 to - 5.6%). Regional analyses revealed stronger interactions in the North and Southeast. These findings indicate that PM₂.₅ exacerbates, and O₃ variably modifies, heat-related hospitalizations in Brazil, underscoring the need for regionally tailored adaptation and air quality policies.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.